Graham Meserve LLC is a Michigan State licensed investigative agency providing services to private citizens, the legal sector, local businesses and corporate agencies. Our agency provides you with proper reports, investigations and surveillance services from experienced investigators and personnel that will enhance your cases and provide evidence for our clients and their court cases.

To keep our agency on top, we keep up with changes and challenges to the investigative field. We stay on top of Michigan laws and regulations in training in surveillance and investigations. All of our client's cases are sensitive and we will handle with integrity and confidentiality.

Professional Associations & Certifications

  • Michigan Council of Professional Investigators

Payment Options

  • American Express, Discover, MasterCard, Money Orders, Personal Checks, VISA

Contact Details

  Website
  Person Patrick Ong
  City Bloomfield Hills , MI
  Address 40701 Woodward Ave., Ste. 100, Bloomfield Hills, MI 48304
  Phone Number (248) 739-9970

Business Representative

Patrick Ong

Agency owner, Licensed PI

Patrick attended the United States Military Academy in West Pointe New York and graduated from Southern Methodist University. Over the past decade he has been the managing private investigator on 100s of cases. Overseeing a staff of field investigators, Patrick ensures that accurate and thorough results are obtained for his clients. Further, Patrick has been involved with numerous undercover operations involving employee theft saving both small businesses and large corporations countless resources.

Products & Services

Graham Meserve LLC, provides insurance fraud investigations for major insurance companies. We have the experience and resources necessary to bring every fraud investigation to a successful conclusion, including cases that result in criminal prosecution and require coordination with law enforcement officials.


Graham Meserve, LLC, offers process service in southeastern Michigan. We are the regional leader in professional service of legal process. Our clients include major law firms and small businesses throughout the United States.


Graham Meserve does the research and due diligence for you. We locate witnesses, conduct interviews, take sworn statements, and conducted manned video surveillances.


If you are responsible for hiring employees to work for and represent your company, then you have a responsibility to avoid negligent hiring. A Pre-Employment Screening Program will help to reduce or eliminate many of the risks associated with hiring, such as high turnover rates, fraud, embezzlement, theft, misappropriation of corporate secrets, and more. It is critical for you, as an employer, to know exactly whom you are hiring. At Graham Meserve, our global network includes specialists who can serve the needs of security departments, human resources departments, and small business operators.


You don't have to live with doubts and suspicion. The truth can be extremely painful but knowing what it is allows you to make decisions that are founded in facts. We understand the gravity of every investigation and work with our clients with strict confidentiality.

Customer Testimonials

Very impressed with Patrick Ong and his team. They have assisted us with several insurance claims and have saved us thousands of dollars. I would recommend them to anyone that is in need of a qualified professional investigator.


I had a feeling that my husband was cheating on me. I hired Graham Meserve to find out the truth. They started right away and provided the proof I needed to see with my own eyes. Through the process they were very supportive of my emotions.

Photo Book

Social Activity

Wondering where your child came from? Call Graham Meserve today at 248.739.9970! #pi #investigate #detect #detective
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#SurveillanceInvestigation for #Infidelity #LocatingIndividuals, #PersonalBackgroundInvestigations #injuredworkerSurveillance & much more !
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Happy 4th of July! Wishing you cheerful times of red, white, and blue!!
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#Tip You should never share anything that a private investigator tells you via the internet, even if you believe your mode of communication to be secure. Graham Meserve
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You may think your request is unusual, rest assured we have heard everything in the book
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"There is nothing more deceptive than an obvious fact." - Sherlock Holmes #PrivateInvestigaor #PI
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Graham Meserve is a Michigan full service #PrivateInvestigation firm servicing all sectors of the community with a reliable & highly skilled team. http://michiganprivateinvestigations.com
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